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The volatile part of the poison gland secretion of A. albisetosus has been identified as principally a mixture of (S)- and (R)-4-methyl-3-heptanone in the ratio 8:2. A. albisetosus workers readily follow trails of synthetic (±)-4-methyl-3-heptanone and are attracted to it as a point source. The poison gland secretions of Aphaenogaster cockerelli contains a mixture of (R)-1-phenylethanol (87.8%)...
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